Electric-Car Battery Maker Ener1 Files For Bankruptcy, But Isn't Dead: Another firm to take advantage of US Depa...

Ener1 wasn’t first choice as battery supplier to the 20-year-old company either. In fact, by the time Ener1 had been named an official supplier, Think had already worked on failed battery deals with Tesla Motors and A123 systems, not to mention a low-volume production run using highly temperamental Zebra molten sodium aluminum chloride batteries.